Defn: An intrusion of one vegetable cell into the cavity of another, sometimes forming there an irregular mass of cells. Goodale.
TYMBAL
Tym"bal, n. Etym: [F. timbale, Sp. timbal; cf. atabal; probably of
Arabic origin. Cf. Atabal, Timbrel.]
Defn: A kind of kettledrum. [Written also trimbal.]
A tymbal's sound were better than my voice. Prior.
TYMP
Tymp, n. Etym: [Cf. Tympan.] (Blast Furnace)
Defn: A hollow water-cooled iron casting in the upper part of the archway in which the dam stands.
TYMPAN
Tym"pan, n. Etym: [F., fr. tympanum a kettledrum, a panel of a door.
See Tympanum, and cf. Tymp.]
1. A drum. [Obs.]
2. (Arch.)
Defn: A panel; a tympanum.
3. (Print.)