Slab"-sid`ed (?), a. Having flat sides; hence, tall, or long and lank.
[Colloq. U. S.]
Slack (?), n. [Cf. Slag.] Small coal; also, coal dust; culm. Raymond.
Slack, n. [Icel. slakki a slope on a mountain edge.] A valley, or
small, shallow dell. [Prov. Eng.] Grose.
Slack, a. [Compar. Slacker (?); superl. Slackest.] [OE. slak, AS.
sleac; akin to OS. slak, OHG. slah, Prov. G. schlack, Icel. slakr, Sw.
slak; cf. Skr. sj to let loose, to throw. Cf. Slake.] Lax; not tense;
not hard drawn; not firmly extended; as, a slack rope.